>>> thanks for staying with us tonight. i'm laura evans. >> i'm maureen umeh. count down to election day, with 48 hours to go. today was the last chance for the campaigns to make their cases on the sunday morning talk shows. >> both are confidently projecting wins. melanie alnwick has the roundup. >> reporter: after 18 months and more than a billion dollars spent on campaign ads, it all comes down to the battleground states. ohio, virginia, colorado, wisconsin, among those in play, depending on which poll you believe. >> the polls are like nailing jello to a tree. >> reporter: the newest to enter the map, pennsylvania. the president's supporters say the romney push there is a hail mary pass. >> they understand the traditional or the battleground states which we've been focusing aren't working out for them. we're even or ahead in all of them. they're looking for somewhere to try and dislodge some electoral votes to win this election. and i can tell you, that's not going to happen. >> reporter: governor romney's political director says independents will put repub